Author: Uri Blass
Date: 04:06:29 05/27/04
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On May 27, 2004 at 06:29:58, Vasik Rajlich wrote: >On May 26, 2004 at 22:11:41, Slater Wold wrote: > >>1 win, 7 draws, 2 losses for Crafty. The match ended 5.5 - 4.5. >> >>To recap, the game was Crafty 19.13 (64-bit) on an AMD FX53. I used the >>book.bin, bookc.bin, and books.bin straight from Bob's FTP site. Blargh is >>Shredder 8 on a 32-bit dual Opteron 2.2Ghz. >> >> > >Of course there is a #-of-games issue, as there always will be for longer games, >but one thing to point out: > >At the SSDF (which is I think what most people base their strength estimates >from), even the best machines are weak 32-bit machines with small L2 caches. I do not think that the machines are slow. The machines are very fast and the fact that there are even faster machines does not change it. 120/40 at the ssdf machines is maybe equivalent to 40/40 on AMD FX53 The only relevant argument is probably that the machines are 32 bit machines so Crafty can earn more speed from faster machine than the opponents. > >This: >1) Hurts a rotated bitboard engine >2) Puts emphasis on selective search, just to get the basic tactics Maybe you confuse between pruning and extensions and selective search. I do not think that you need to do selective search in order to get good results in the ssdf list. The opposite I do not like even trying selective selective and the way to go is probably to search to reduced depth and search again to the original depth in case that you get unexpected result. > >I think that computer chess of the future (let's say two or three years from >now, on top machines) will be much different. We won't even talk about tactics. I disagree. Tactics is important at all levels. Every win is because of tactics if you search deep enough(assuming that the theoretic result of the game is a draw). Uri
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